如何在SQL中使用C#通过触发器更新现有行

CREATE TRIGGER UpdateTrigger
ON YourTable
AFTER UPDATE
AS
BEGIN
    -- 触发器逻辑
    -- 调用C#代码更新现有行
END

using System;
using System.Data.SqlClient;

public class UpdateHelper
{
    public static void UpdateExistingRow(int id, string newValue)
    {
        // 连接到数据库
        using (SqlConnection connection = new SqlConnection("YourConnectionString"))
        {
            connection.Open();

            // 执行更新语句
            string updateQuery = $"UPDATE YourTable SET YourColumn = '{newValue}' WHERE Id = {id}";
            SqlCommand command = new SqlCommand(updateQuery, connection);
            command.ExecuteNonQuery();
        }
    }
}

CREATE TRIGGER UpdateTrigger
ON YourTable
AFTER UPDATE
AS
BEGIN
    -- 触发器逻辑
    DECLARE @id INT
    DECLARE @newValue NVARCHAR(50)

    -- 获取更新后的值
    SELECT @id = Id, @newValue = YourColumn FROM inserted

    -- 调用C#代码更新现有行
    EXEC YourDatabaseName.dbo.UpdateHelper.UpdateExistingRow @id, @newValue
END